How do they celebrate Christmas in Turkey? Simply put, they/ We don't!
But the New Year is recognised with greetings, decorations, gifts, and parties, so you would be forgiven if you thought that it was Christmas that was being celebrated. Christmas Day is a normal workday in the office, so expatriates have to take vacation if they don't want to work that day. The only holiday is New Year's Day, but people do take an extra day or so to extend that.
However, there are quite a number of expatriates from Western countries in Ankara who do celebrate Christmas. Christmas trees are available for purchase, along with decorations to go on them. The bigger hotels have special Christmas menus, and Santa Claus has been known to visit. As St. Nicolas was a Bishop in Myra, Turkey, this seems appropriate. Children from the German School and the British School give carol concerts in the Hilton on successive Sunday afternoons, and the choir and band from the American High School sing and play in the Sheraton. These hotels, and others, have Christmas trees, and the Sheraton also has a gingerbread house six feet high.
The expatriate community holds parties, dinner dances, and celebrations large and small. The Anglican Church connected with the British Embassy (St. Nicolas again!)has a Nativity Play put on by the children. Also a Carol Service, followed by mince pies and mulled wine; a Midnight Communion on Christmas Eve; and a family Service on Christmas Day.
So, although there is no public or official recognition of Christmas, there is enough going on that it is not too different from home.
Finally, from all in Ankara, Turkey:
Saglik ve Mutluluk Dileklerimizle Yeni Yilinizi Kutlariz !
Greetings of the Season and Best Wishes for a Happy New Year